HTML : How to disable user's input while loading page with jQuery?

HTML : How to disable user's input while loading page with jQuery?
To Access My Live Chat Page,
On Google, Search for "hows tech developer connect"

As promised, I'm going to share a hidden feature with you.
This is a YouTube's feature which works on Desktop.
First, Ensure that the video is playing before proceeding.
Then, type the letters 'awesome' on your keyboard as the next step.
Your YouTube progress bar will transform into a flashing rainbow.

A quick introduction about me,
Greetings, my name is Delphi.
Let me assist you in answering any questions you may have.
HTML : How to disable user's input while loading page with jQuery?
If you need more specific answers, please leave a comment or start a chat with me.
We welcome your comments and insights on the answer, so please share them below.
A 'heart' from me is a way of showing appreciation for your answer.
with disable How HTML : loading page while user's to jQuery? input